How can a hydraulic cushion valve prevent jerking loads on a gillnet reel?

In summary, the conversation discusses the issue of jerking load on a commercial fishing boat's gillnet reel, which is powered by a hydraulic motor and chain drive/sprocket setup. This causes pressure spikes and potential damage to the system. The solution suggested is to install an inline hydraulic cushion valve to reduce the jerking motion and protect the motor. It is also recommended to check for any recent changes that may have caused the issue, such as a new or tight chain.
  • #1
kellym
1
0
I have a commercial fishing boat with a gillnet reel,basically a large winch. The reel is powered by a hydraulic motor and a chain drive/sprocket setup. It uses a reversing hydraulic valve with load checks,I think they are called. When the motor is activated/deactivated it comes to a complete stop and puts a hard jerking load on the reel. I have to use the valve with load checks to hold the reel in position when stopped so it won't back off in high winds. Will an inline hydraulic cushion valve take the jerking motion off the motor? Thank you
 
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  • #2
Why is a jerking load on the reel a problem? If the jerk causes pressure spikes that bursts hoses or couplings, sheared shaft keys or broke the chain then there would be a problem. A pressure relief valve across the motor, set slightly above the pump pressure will reduce pressure spikes to safe levels.

If it is a hand operated directional control valve then moving your hand slower should increase the transition time and reduce the jerk.

Why do the jerks occur now? What has changed recently, is the chain new or too tight? There needs to be some give in the system.
 

1. What is a hydraulic cushion valve?

A hydraulic cushion valve is a type of valve used in hydraulic systems to control the flow of fluid. It includes a cushion chamber that helps to absorb shock and reduce the impact of sudden pressure changes in the system.

2. How does a hydraulic cushion valve work?

A hydraulic cushion valve works by using a piston and a cushion chamber to control the flow of fluid. When pressure changes occur in the system, the piston moves and the cushion chamber helps to absorb the shock, preventing damage to the system.

3. What are the benefits of using a hydraulic cushion valve?

Some of the benefits of using a hydraulic cushion valve include improved system stability, reduced impact of pressure changes, and increased safety. It also helps to prolong the lifespan of hydraulic components by reducing wear and tear.

4. How is a hydraulic cushion valve different from a regular valve?

A hydraulic cushion valve differs from a regular valve in that it includes a cushion chamber, which helps to absorb shock and reduce the impact of pressure changes in the system. This makes it ideal for use in applications where sudden pressure changes occur frequently.

5. Where are hydraulic cushion valves commonly used?

Hydraulic cushion valves are commonly used in a variety of industries, including manufacturing, construction, and transportation. They can be found in hydraulic equipment such as cranes, forklifts, and excavators, as well as in industrial machinery and hydraulic presses.

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